Prosecution Insights
Last updated: October 27, 2026

Thanh H Nguyen, USPTO Patent Examiner

Listed by the USPTO as NGUYEN, THANH H

Tech Center 1700 • Art Units: 1791 1792

This examiner grants 18% of resolved cases

Analysis

Examiner Thanh H. Nguyen operates in Tech Center 1700 and Art Unit 1791, having handled 335 resolved cases. The allowance rate is 18.5 percent, which is very low. The median days to allowance is 1248, indicating a difficult and lengthy process for those cases that reach a grant.

The interview lift is 34.3 percent, suggesting that interviews are a critical strategy for overcoming the examiner's high standards. This 34.3 percent lift is higher than the 18.5 percent allowance rate, indicating that direct communication is often necessary for success. Practitioners should plan for the 1248 day median duration when managing the 335 resolved cases.

Fuji Oil Holdings Inc., The Coca-Cola Company, and Kraft Foods Group Brands LLC are the leading companies. FITCH EVEN TABIN & FLANNERY, LLP, Knobbe, Martens, Olson & Bear, LLP, and BALLARD SPAHR LLP are the top firms. These representatives must use interviews to improve the low odds of securing an allowance.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

18.5%
Allow Rate
-46.5% vs TC avg
368
Total Applications
+34.3%
Interview Lift
1248
Avg Prosecution Days
Based on 335 resolved cases, 2023–2026

Rejection Statute Breakdown

0.4%
§101 Eligibility
10.4%
§102 Novelty
53.7%
§103 Obviousness
30.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17440409 COMPOSITION COMPRISING TRANSFRUCTOSYLATED STEVIOL GLYCOSIDE Non-Final OA CJ CHEILJEDANG CORPORATION
16593753 CONTAINER WITH HINGED COMPARTMENT Final Rejection TARGET BRANDS, INC.
18262634 AERATED FREEZE-DRIED BABY-SNACK Non-Final OA SOCIETE DES PRODUITS NESTLE S.A.
17223709 ENCAPSULATED SWEETENER GRANULES AND METHODS OF PREPARATION THEREOF Non-Final OA Altria Client Services LLC
17922766 NUTRITIONAL SUPPLEMENTS COMPRISING DIETARY METAL COMPLEXES IN A MATRIX OF CELLULOSIC MATERIALS Final Rejection North Carolina State University
17916934 TEA-FRAGRANCE-IMPARTING LIQUID COMPOSITION HAVING GREEN LAVER SCENT Final Rejection SUNTORY HOLDINGS LIMITED
18860928 METHOD FOR IMPARTING ANIMAL-FAT-LIKE FLAVOR IN PROCESSED FOOD PRODUCT Non-Final OA FUJI OIL HOLDINGS INC.
18875987 ENZYMATIC AGENT FOR LESSENING SUGAR IN VEGETABLE FOOD OR BEVERAGE Non-Final OA AMANO ENZYME INC.

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Frequently Asked Questions

What is examiner Thanh H Nguyen's allowance rate?

18.5% of resolved applications examined by Thanh H Nguyen were allowed (335 resolved cases), compared with 26.2% across Art Unit 1791 over the last five years.

Does an interview help with examiner Thanh H Nguyen?

This examiner's interview lift is +34.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Thanh H Nguyen take to allow a patent?

Applications allowed by Thanh H Nguyen took 1,248 days on average from filing to allowance.

Which art unit does examiner Thanh H Nguyen work in?

Thanh H Nguyen examines applications in Art Unit 1791 in Tech Center 1700 (Chemistry & Materials).

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